4.0 OHV rocker arm upgrade

[masospaghetti]

Are there any bolt-in upgrade rockers that would provide any sort of power/efficiency improvement? Roller rockers and/or more lift? For a 98 4.0 OHV

Valve covers are leaking anyway!

 

[Turdle]

This thread should apply

M90 rebuild (rudy)

I'm not sure if it is as easy as bolt in but it sure looks purty.

 

[roscoe 0202]

the morano rockers have a problem with the bolts that hold the plate on the head if you read the whole thread m90 rebuild[rudy] he goes into the problem
roscoe